CameraService.cpp revision 98a668f6ea51e4d894d2ebb61a0e18287fb14008
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "CameraService" 18#define ATRACE_TAG ATRACE_TAG_CAMERA 19//#define LOG_NDEBUG 0 20 21#include <algorithm> 22#include <climits> 23#include <stdio.h> 24#include <cstring> 25#include <ctime> 26#include <string> 27#include <sys/types.h> 28#include <inttypes.h> 29#include <pthread.h> 30 31#include <binder/AppOpsManager.h> 32#include <binder/IPCThreadState.h> 33#include <binder/IServiceManager.h> 34#include <binder/MemoryBase.h> 35#include <binder/MemoryHeapBase.h> 36#include <binder/ProcessInfoService.h> 37#include <cutils/atomic.h> 38#include <cutils/properties.h> 39#include <gui/Surface.h> 40#include <hardware/hardware.h> 41#include <media/AudioSystem.h> 42#include <media/IMediaHTTPService.h> 43#include <media/mediaplayer.h> 44#include <mediautils/BatteryNotifier.h> 45#include <utils/Errors.h> 46#include <utils/Log.h> 47#include <utils/String16.h> 48#include <utils/Trace.h> 49#include <private/android_filesystem_config.h> 50#include <system/camera_vendor_tags.h> 51#include <system/camera_metadata.h> 52#include <system/camera.h> 53 54#include "CameraService.h" 55#include "api1/CameraClient.h" 56#include "api1/Camera2Client.h" 57#include "api2/CameraDeviceClient.h" 58#include "utils/CameraTraces.h" 59 60namespace android { 61 62// ---------------------------------------------------------------------------- 63// Logging support -- this is for debugging only 64// Use "adb shell dumpsys media.camera -v 1" to change it. 65volatile int32_t gLogLevel = 0; 66 67#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 68#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 69 70static void setLogLevel(int level) { 71 android_atomic_write(level, &gLogLevel); 72} 73 74// ---------------------------------------------------------------------------- 75 76extern "C" { 77static void camera_device_status_change( 78 const struct camera_module_callbacks* callbacks, 79 int camera_id, 80 int new_status) { 81 sp<CameraService> cs = const_cast<CameraService*>( 82 static_cast<const CameraService*>(callbacks)); 83 84 cs->onDeviceStatusChanged(static_cast<camera_device_status_t>(camera_id), 85 static_cast<camera_device_status_t>(new_status)); 86} 87 88static void torch_mode_status_change( 89 const struct camera_module_callbacks* callbacks, 90 const char* camera_id, 91 int new_status) { 92 if (!callbacks || !camera_id) { 93 ALOGE("%s invalid parameters. callbacks %p, camera_id %p", __FUNCTION__, 94 callbacks, camera_id); 95 } 96 sp<CameraService> cs = const_cast<CameraService*>( 97 static_cast<const CameraService*>(callbacks)); 98 99 ICameraServiceListener::TorchStatus status; 100 switch (new_status) { 101 case TORCH_MODE_STATUS_NOT_AVAILABLE: 102 status = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 103 break; 104 case TORCH_MODE_STATUS_AVAILABLE_OFF: 105 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF; 106 break; 107 case TORCH_MODE_STATUS_AVAILABLE_ON: 108 status = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON; 109 break; 110 default: 111 ALOGE("Unknown torch status %d", new_status); 112 return; 113 } 114 115 cs->onTorchStatusChanged( 116 String8(camera_id), 117 status); 118} 119} // extern "C" 120 121// ---------------------------------------------------------------------------- 122 123// This is ugly and only safe if we never re-create the CameraService, but 124// should be ok for now. 125static CameraService *gCameraService; 126 127CameraService::CameraService() : 128 mEventLog(DEFAULT_EVENT_LOG_LENGTH), 129 mSoundRef(0), mModule(nullptr), 130 mNumberOfCameras(0), mNumberOfNormalCameras(0) { 131 ALOGI("CameraService started (pid=%d)", getpid()); 132 gCameraService = this; 133 134 this->camera_device_status_change = android::camera_device_status_change; 135 this->torch_mode_status_change = android::torch_mode_status_change; 136 137 mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock); 138} 139 140void CameraService::onFirstRef() 141{ 142 ALOGI("CameraService process starting"); 143 144 BnCameraService::onFirstRef(); 145 146 // Update battery life tracking if service is restarting 147 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 148 notifier.noteResetCamera(); 149 notifier.noteResetFlashlight(); 150 151 camera_module_t *rawModule; 152 int err = hw_get_module(CAMERA_HARDWARE_MODULE_ID, 153 (const hw_module_t **)&rawModule); 154 if (err < 0) { 155 ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err)); 156 logServiceError("Could not load camera HAL module", err); 157 return; 158 } 159 160 mModule = new CameraModule(rawModule); 161 err = mModule->init(); 162 if (err != OK) { 163 ALOGE("Could not initialize camera HAL module: %d (%s)", err, 164 strerror(-err)); 165 logServiceError("Could not initialize camera HAL module", err); 166 167 delete mModule; 168 mModule = nullptr; 169 return; 170 } 171 ALOGI("Loaded \"%s\" camera module", mModule->getModuleName()); 172 173 mNumberOfCameras = mModule->getNumberOfCameras(); 174 mNumberOfNormalCameras = mNumberOfCameras; 175 176 // Setup vendor tags before we call get_camera_info the first time 177 // because HAL might need to setup static vendor keys in get_camera_info 178 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 179 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_2) { 180 setUpVendorTags(); 181 } 182 183 mFlashlight = new CameraFlashlight(*mModule, *this); 184 status_t res = mFlashlight->findFlashUnits(); 185 if (res) { 186 // impossible because we haven't open any camera devices. 187 ALOGE("Failed to find flash units."); 188 } 189 190 int latestStrangeCameraId = INT_MAX; 191 for (int i = 0; i < mNumberOfCameras; i++) { 192 String8 cameraId = String8::format("%d", i); 193 194 // Get camera info 195 196 struct camera_info info; 197 bool haveInfo = true; 198 status_t rc = mModule->getCameraInfo(i, &info); 199 if (rc != NO_ERROR) { 200 ALOGE("%s: Received error loading camera info for device %d, cost and" 201 " conflicting devices fields set to defaults for this device.", 202 __FUNCTION__, i); 203 haveInfo = false; 204 } 205 206 // Check for backwards-compatibility support 207 if (haveInfo) { 208 if (checkCameraCapabilities(i, info, &latestStrangeCameraId) != OK) { 209 delete mModule; 210 mModule = nullptr; 211 return; 212 } 213 } 214 215 // Defaults to use for cost and conflicting devices 216 int cost = 100; 217 char** conflicting_devices = nullptr; 218 size_t conflicting_devices_length = 0; 219 220 // If using post-2.4 module version, query the cost + conflicting devices from the HAL 221 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_4 && haveInfo) { 222 cost = info.resource_cost; 223 conflicting_devices = info.conflicting_devices; 224 conflicting_devices_length = info.conflicting_devices_length; 225 } 226 227 std::set<String8> conflicting; 228 for (size_t i = 0; i < conflicting_devices_length; i++) { 229 conflicting.emplace(String8(conflicting_devices[i])); 230 } 231 232 // Initialize state for each camera device 233 { 234 Mutex::Autolock lock(mCameraStatesLock); 235 mCameraStates.emplace(cameraId, std::make_shared<CameraState>(cameraId, cost, 236 conflicting)); 237 } 238 239 if (mFlashlight->hasFlashUnit(cameraId)) { 240 mTorchStatusMap.add(cameraId, 241 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF); 242 } 243 } 244 245 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_1) { 246 mModule->setCallbacks(this); 247 } 248 249 CameraService::pingCameraServiceProxy(); 250} 251 252sp<ICameraServiceProxy> CameraService::getCameraServiceProxy() { 253 sp<IServiceManager> sm = defaultServiceManager(); 254 sp<IBinder> binder = sm->getService(String16("media.camera.proxy")); 255 if (binder == nullptr) { 256 return nullptr; 257 } 258 sp<ICameraServiceProxy> proxyBinder = interface_cast<ICameraServiceProxy>(binder); 259 return proxyBinder; 260} 261 262void CameraService::pingCameraServiceProxy() { 263 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 264 if (proxyBinder == nullptr) return; 265 proxyBinder->pingForUserUpdate(); 266} 267 268CameraService::~CameraService() { 269 if (mModule) { 270 delete mModule; 271 mModule = nullptr; 272 } 273 VendorTagDescriptor::clearGlobalVendorTagDescriptor(); 274 gCameraService = nullptr; 275} 276 277void CameraService::onDeviceStatusChanged(camera_device_status_t cameraId, 278 camera_device_status_t newStatus) { 279 ALOGI("%s: Status changed for cameraId=%d, newStatus=%d", __FUNCTION__, 280 cameraId, newStatus); 281 282 String8 id = String8::format("%d", cameraId); 283 std::shared_ptr<CameraState> state = getCameraState(id); 284 285 if (state == nullptr) { 286 ALOGE("%s: Bad camera ID %d", __FUNCTION__, cameraId); 287 return; 288 } 289 290 ICameraServiceListener::Status oldStatus = state->getStatus(); 291 292 if (oldStatus == static_cast<ICameraServiceListener::Status>(newStatus)) { 293 ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus); 294 return; 295 } 296 297 if (newStatus == CAMERA_DEVICE_STATUS_NOT_PRESENT) { 298 logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus, 299 newStatus)); 300 sp<BasicClient> clientToDisconnect; 301 { 302 // Don't do this in updateStatus to avoid deadlock over mServiceLock 303 Mutex::Autolock lock(mServiceLock); 304 305 // Set the device status to NOT_PRESENT, clients will no longer be able to connect 306 // to this device until the status changes 307 updateStatus(ICameraServiceListener::STATUS_NOT_PRESENT, id); 308 309 // Remove cached shim parameters 310 state->setShimParams(CameraParameters()); 311 312 // Remove the client from the list of active clients 313 clientToDisconnect = removeClientLocked(id); 314 315 // Notify the client of disconnection 316 clientToDisconnect->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 317 CaptureResultExtras{}); 318 } 319 320 ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL", 321 __FUNCTION__, id.string()); 322 323 // Disconnect client 324 if (clientToDisconnect.get() != nullptr) { 325 // Ensure not in binder RPC so client disconnect PID checks work correctly 326 LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(), 327 "onDeviceStatusChanged must be called from the camera service process!"); 328 clientToDisconnect->disconnect(); 329 } 330 331 } else { 332 if (oldStatus == ICameraServiceListener::Status::STATUS_NOT_PRESENT) { 333 logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus, 334 newStatus)); 335 } 336 updateStatus(static_cast<ICameraServiceListener::Status>(newStatus), id); 337 } 338 339} 340 341void CameraService::onTorchStatusChanged(const String8& cameraId, 342 ICameraServiceListener::TorchStatus newStatus) { 343 Mutex::Autolock al(mTorchStatusMutex); 344 onTorchStatusChangedLocked(cameraId, newStatus); 345} 346 347void CameraService::onTorchStatusChangedLocked(const String8& cameraId, 348 ICameraServiceListener::TorchStatus newStatus) { 349 ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d", 350 __FUNCTION__, cameraId.string(), newStatus); 351 352 ICameraServiceListener::TorchStatus status; 353 status_t res = getTorchStatusLocked(cameraId, &status); 354 if (res) { 355 ALOGE("%s: cannot get torch status of camera %s: %s (%d)", 356 __FUNCTION__, cameraId.string(), strerror(-res), res); 357 return; 358 } 359 if (status == newStatus) { 360 return; 361 } 362 363 res = setTorchStatusLocked(cameraId, newStatus); 364 if (res) { 365 ALOGE("%s: Failed to set the torch status to %d: %s (%d)", __FUNCTION__, 366 (uint32_t)newStatus, strerror(-res), res); 367 return; 368 } 369 370 { 371 // Update battery life logging for flashlight 372 Mutex::Autolock al(mTorchUidMapMutex); 373 auto iter = mTorchUidMap.find(cameraId); 374 if (iter != mTorchUidMap.end()) { 375 int oldUid = iter->second.second; 376 int newUid = iter->second.first; 377 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 378 if (oldUid != newUid) { 379 // If the UID has changed, log the status and update current UID in mTorchUidMap 380 if (status == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 381 notifier.noteFlashlightOff(cameraId, oldUid); 382 } 383 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 384 notifier.noteFlashlightOn(cameraId, newUid); 385 } 386 iter->second.second = newUid; 387 } else { 388 // If the UID has not changed, log the status 389 if (newStatus == ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON) { 390 notifier.noteFlashlightOn(cameraId, oldUid); 391 } else { 392 notifier.noteFlashlightOff(cameraId, oldUid); 393 } 394 } 395 } 396 } 397 398 { 399 Mutex::Autolock lock(mStatusListenerLock); 400 for (auto& i : mListenerList) { 401 i->onTorchStatusChanged(newStatus, String16{cameraId}); 402 } 403 } 404} 405 406int32_t CameraService::getNumberOfCameras() { 407 ATRACE_CALL(); 408 return getNumberOfCameras(CAMERA_TYPE_BACKWARD_COMPATIBLE); 409} 410 411int32_t CameraService::getNumberOfCameras(int type) { 412 ATRACE_CALL(); 413 switch (type) { 414 case CAMERA_TYPE_BACKWARD_COMPATIBLE: 415 return mNumberOfNormalCameras; 416 case CAMERA_TYPE_ALL: 417 return mNumberOfCameras; 418 default: 419 ALOGW("%s: Unknown camera type %d, returning 0", 420 __FUNCTION__, type); 421 return 0; 422 } 423} 424 425status_t CameraService::getCameraInfo(int cameraId, 426 struct CameraInfo* cameraInfo) { 427 ATRACE_CALL(); 428 if (!mModule) { 429 return -ENODEV; 430 } 431 432 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 433 return BAD_VALUE; 434 } 435 436 struct camera_info info; 437 status_t rc = filterGetInfoErrorCode( 438 mModule->getCameraInfo(cameraId, &info)); 439 cameraInfo->facing = info.facing; 440 cameraInfo->orientation = info.orientation; 441 return rc; 442} 443 444int CameraService::cameraIdToInt(const String8& cameraId) { 445 errno = 0; 446 size_t pos = 0; 447 int ret = stoi(std::string{cameraId.string()}, &pos); 448 if (errno != 0 || pos != cameraId.size()) { 449 return -1; 450 } 451 return ret; 452} 453 454status_t CameraService::generateShimMetadata(int cameraId, /*out*/CameraMetadata* cameraInfo) { 455 ATRACE_CALL(); 456 status_t ret = OK; 457 struct CameraInfo info; 458 if ((ret = getCameraInfo(cameraId, &info)) != OK) { 459 return ret; 460 } 461 462 CameraMetadata shimInfo; 463 int32_t orientation = static_cast<int32_t>(info.orientation); 464 if ((ret = shimInfo.update(ANDROID_SENSOR_ORIENTATION, &orientation, 1)) != OK) { 465 return ret; 466 } 467 468 uint8_t facing = (info.facing == CAMERA_FACING_FRONT) ? 469 ANDROID_LENS_FACING_FRONT : ANDROID_LENS_FACING_BACK; 470 if ((ret = shimInfo.update(ANDROID_LENS_FACING, &facing, 1)) != OK) { 471 return ret; 472 } 473 474 CameraParameters shimParams; 475 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 476 // Error logged by callee 477 return ret; 478 } 479 480 Vector<Size> sizes; 481 Vector<Size> jpegSizes; 482 Vector<int32_t> formats; 483 { 484 shimParams.getSupportedPreviewSizes(/*out*/sizes); 485 shimParams.getSupportedPreviewFormats(/*out*/formats); 486 shimParams.getSupportedPictureSizes(/*out*/jpegSizes); 487 } 488 489 // Always include IMPLEMENTATION_DEFINED 490 formats.add(HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED); 491 492 const size_t INTS_PER_CONFIG = 4; 493 494 // Build available stream configurations metadata 495 size_t streamConfigSize = (sizes.size() * formats.size() + jpegSizes.size()) * INTS_PER_CONFIG; 496 497 Vector<int32_t> streamConfigs; 498 streamConfigs.setCapacity(streamConfigSize); 499 500 for (size_t i = 0; i < formats.size(); ++i) { 501 for (size_t j = 0; j < sizes.size(); ++j) { 502 streamConfigs.add(formats[i]); 503 streamConfigs.add(sizes[j].width); 504 streamConfigs.add(sizes[j].height); 505 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 506 } 507 } 508 509 for (size_t i = 0; i < jpegSizes.size(); ++i) { 510 streamConfigs.add(HAL_PIXEL_FORMAT_BLOB); 511 streamConfigs.add(jpegSizes[i].width); 512 streamConfigs.add(jpegSizes[i].height); 513 streamConfigs.add(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT); 514 } 515 516 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, 517 streamConfigs.array(), streamConfigSize)) != OK) { 518 return ret; 519 } 520 521 int64_t fakeMinFrames[0]; 522 // TODO: Fixme, don't fake min frame durations. 523 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, 524 fakeMinFrames, 0)) != OK) { 525 return ret; 526 } 527 528 int64_t fakeStalls[0]; 529 // TODO: Fixme, don't fake stall durations. 530 if ((ret = shimInfo.update(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, 531 fakeStalls, 0)) != OK) { 532 return ret; 533 } 534 535 *cameraInfo = shimInfo; 536 return OK; 537} 538 539status_t CameraService::getCameraCharacteristics(int cameraId, 540 CameraMetadata* cameraInfo) { 541 ATRACE_CALL(); 542 if (!cameraInfo) { 543 ALOGE("%s: cameraInfo is NULL", __FUNCTION__); 544 return BAD_VALUE; 545 } 546 547 if (!mModule) { 548 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 549 return -ENODEV; 550 } 551 552 if (cameraId < 0 || cameraId >= mNumberOfCameras) { 553 ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId); 554 return BAD_VALUE; 555 } 556 557 int facing; 558 status_t ret = OK; 559 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0 || 560 getDeviceVersion(cameraId, &facing) < CAMERA_DEVICE_API_VERSION_3_0) { 561 /** 562 * Backwards compatibility mode for old HALs: 563 * - Convert CameraInfo into static CameraMetadata properties. 564 * - Retrieve cached CameraParameters for this camera. If none exist, 565 * attempt to open CameraClient and retrieve the CameraParameters. 566 * - Convert cached CameraParameters into static CameraMetadata 567 * properties. 568 */ 569 ALOGI("%s: Switching to HAL1 shim implementation...", __FUNCTION__); 570 571 if ((ret = generateShimMetadata(cameraId, cameraInfo)) != OK) { 572 return ret; 573 } 574 575 } else { 576 /** 577 * Normal HAL 2.1+ codepath. 578 */ 579 struct camera_info info; 580 ret = filterGetInfoErrorCode(mModule->getCameraInfo(cameraId, &info)); 581 *cameraInfo = info.static_camera_characteristics; 582 } 583 584 return ret; 585} 586 587int CameraService::getCallingPid() { 588 return IPCThreadState::self()->getCallingPid(); 589} 590 591int CameraService::getCallingUid() { 592 return IPCThreadState::self()->getCallingUid(); 593} 594 595String8 CameraService::getFormattedCurrentTime() { 596 time_t now = time(nullptr); 597 char formattedTime[64]; 598 strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now)); 599 return String8(formattedTime); 600} 601 602int CameraService::getCameraPriorityFromProcState(int procState) { 603 // Find the priority for the camera usage based on the process state. Higher priority clients 604 // win for evictions. 605 if (procState < 0) { 606 ALOGE("%s: Received invalid process state %d from ActivityManagerService!", __FUNCTION__, 607 procState); 608 return -1; 609 } 610 // Treat sleeping TOP processes the same as regular TOP processes, for 611 // access priority. This is important for lock-screen camera launch scenarios 612 if (procState == PROCESS_STATE_TOP_SLEEPING) { 613 procState = PROCESS_STATE_TOP; 614 } 615 return INT_MAX - procState; 616} 617 618status_t CameraService::getCameraVendorTagDescriptor(/*out*/sp<VendorTagDescriptor>& desc) { 619 ATRACE_CALL(); 620 if (!mModule) { 621 ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__); 622 return -ENODEV; 623 } 624 625 desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 626 return OK; 627} 628 629int CameraService::getDeviceVersion(int cameraId, int* facing) { 630 ATRACE_CALL(); 631 struct camera_info info; 632 if (mModule->getCameraInfo(cameraId, &info) != OK) { 633 return -1; 634 } 635 636 int deviceVersion; 637 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 638 deviceVersion = info.device_version; 639 } else { 640 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 641 } 642 643 if (facing) { 644 *facing = info.facing; 645 } 646 647 return deviceVersion; 648} 649 650status_t CameraService::filterGetInfoErrorCode(status_t err) { 651 switch(err) { 652 case NO_ERROR: 653 case -EINVAL: 654 return err; 655 default: 656 break; 657 } 658 return -ENODEV; 659} 660 661bool CameraService::setUpVendorTags() { 662 ATRACE_CALL(); 663 vendor_tag_ops_t vOps = vendor_tag_ops_t(); 664 665 // Check if vendor operations have been implemented 666 if (!mModule->isVendorTagDefined()) { 667 ALOGI("%s: No vendor tags defined for this device.", __FUNCTION__); 668 return false; 669 } 670 671 mModule->getVendorTagOps(&vOps); 672 673 // Ensure all vendor operations are present 674 if (vOps.get_tag_count == NULL || vOps.get_all_tags == NULL || 675 vOps.get_section_name == NULL || vOps.get_tag_name == NULL || 676 vOps.get_tag_type == NULL) { 677 ALOGE("%s: Vendor tag operations not fully defined. Ignoring definitions." 678 , __FUNCTION__); 679 return false; 680 } 681 682 // Read all vendor tag definitions into a descriptor 683 sp<VendorTagDescriptor> desc; 684 status_t res; 685 if ((res = VendorTagDescriptor::createDescriptorFromOps(&vOps, /*out*/desc)) 686 != OK) { 687 ALOGE("%s: Could not generate descriptor from vendor tag operations," 688 "received error %s (%d). Camera clients will not be able to use" 689 "vendor tags", __FUNCTION__, strerror(res), res); 690 return false; 691 } 692 693 // Set the global descriptor to use with camera metadata 694 VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc); 695 return true; 696} 697 698status_t CameraService::makeClient(const sp<CameraService>& cameraService, 699 const sp<IInterface>& cameraCb, const String16& packageName, const String8& cameraId, 700 int facing, int clientPid, uid_t clientUid, int servicePid, bool legacyMode, 701 int halVersion, int deviceVersion, apiLevel effectiveApiLevel, 702 /*out*/sp<BasicClient>* client) { 703 704 // TODO: Update CameraClients + HAL interface to use strings for Camera IDs 705 int id = cameraIdToInt(cameraId); 706 if (id == -1) { 707 ALOGE("%s: Invalid camera ID %s, cannot convert to integer.", __FUNCTION__, 708 cameraId.string()); 709 return BAD_VALUE; 710 } 711 712 if (halVersion < 0 || halVersion == deviceVersion) { 713 // Default path: HAL version is unspecified by caller, create CameraClient 714 // based on device version reported by the HAL. 715 switch(deviceVersion) { 716 case CAMERA_DEVICE_API_VERSION_1_0: 717 if (effectiveApiLevel == API_1) { // Camera1 API route 718 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 719 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 720 clientPid, clientUid, getpid(), legacyMode); 721 } else { // Camera2 API route 722 ALOGW("Camera using old HAL version: %d", deviceVersion); 723 return -EOPNOTSUPP; 724 } 725 break; 726 case CAMERA_DEVICE_API_VERSION_3_0: 727 case CAMERA_DEVICE_API_VERSION_3_1: 728 case CAMERA_DEVICE_API_VERSION_3_2: 729 case CAMERA_DEVICE_API_VERSION_3_3: 730 if (effectiveApiLevel == API_1) { // Camera1 API route 731 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 732 *client = new Camera2Client(cameraService, tmp, packageName, id, facing, 733 clientPid, clientUid, servicePid, legacyMode); 734 } else { // Camera2 API route 735 sp<ICameraDeviceCallbacks> tmp = 736 static_cast<ICameraDeviceCallbacks*>(cameraCb.get()); 737 *client = new CameraDeviceClient(cameraService, tmp, packageName, id, 738 facing, clientPid, clientUid, servicePid); 739 } 740 break; 741 default: 742 // Should not be reachable 743 ALOGE("Unknown camera device HAL version: %d", deviceVersion); 744 return INVALID_OPERATION; 745 } 746 } else { 747 // A particular HAL version is requested by caller. Create CameraClient 748 // based on the requested HAL version. 749 if (deviceVersion > CAMERA_DEVICE_API_VERSION_1_0 && 750 halVersion == CAMERA_DEVICE_API_VERSION_1_0) { 751 // Only support higher HAL version device opened as HAL1.0 device. 752 sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get()); 753 *client = new CameraClient(cameraService, tmp, packageName, id, facing, 754 clientPid, clientUid, servicePid, legacyMode); 755 } else { 756 // Other combinations (e.g. HAL3.x open as HAL2.x) are not supported yet. 757 ALOGE("Invalid camera HAL version %x: HAL %x device can only be" 758 " opened as HAL %x device", halVersion, deviceVersion, 759 CAMERA_DEVICE_API_VERSION_1_0); 760 return INVALID_OPERATION; 761 } 762 } 763 return NO_ERROR; 764} 765 766String8 CameraService::toString(std::set<userid_t> intSet) { 767 String8 s(""); 768 bool first = true; 769 for (userid_t i : intSet) { 770 if (first) { 771 s.appendFormat("%d", i); 772 first = false; 773 } else { 774 s.appendFormat(", %d", i); 775 } 776 } 777 return s; 778} 779 780status_t CameraService::initializeShimMetadata(int cameraId) { 781 int uid = getCallingUid(); 782 783 String16 internalPackageName("cameraserver"); 784 String8 id = String8::format("%d", cameraId); 785 status_t ret = NO_ERROR; 786 sp<Client> tmp = nullptr; 787 if ((ret = connectHelper<ICameraClient,Client>(sp<ICameraClient>{nullptr}, id, 788 static_cast<int>(CAMERA_HAL_API_VERSION_UNSPECIFIED), internalPackageName, uid, 789 USE_CALLING_PID, API_1, false, true, tmp)) != NO_ERROR) { 790 ALOGE("%s: Error %d (%s) initializing shim metadata.", __FUNCTION__, ret, strerror(ret)); 791 return ret; 792 } 793 return NO_ERROR; 794} 795 796status_t CameraService::getLegacyParametersLazy(int cameraId, 797 /*out*/ 798 CameraParameters* parameters) { 799 800 ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId); 801 802 status_t ret = 0; 803 804 if (parameters == NULL) { 805 ALOGE("%s: parameters must not be null", __FUNCTION__); 806 return BAD_VALUE; 807 } 808 809 String8 id = String8::format("%d", cameraId); 810 811 // Check if we already have parameters 812 { 813 // Scope for service lock 814 Mutex::Autolock lock(mServiceLock); 815 auto cameraState = getCameraState(id); 816 if (cameraState == nullptr) { 817 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 818 return BAD_VALUE; 819 } 820 CameraParameters p = cameraState->getShimParams(); 821 if (!p.isEmpty()) { 822 *parameters = p; 823 return NO_ERROR; 824 } 825 } 826 827 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 828 ret = initializeShimMetadata(cameraId); 829 IPCThreadState::self()->restoreCallingIdentity(token); 830 if (ret != NO_ERROR) { 831 // Error already logged by callee 832 return ret; 833 } 834 835 // Check for parameters again 836 { 837 // Scope for service lock 838 Mutex::Autolock lock(mServiceLock); 839 auto cameraState = getCameraState(id); 840 if (cameraState == nullptr) { 841 ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string()); 842 return BAD_VALUE; 843 } 844 CameraParameters p = cameraState->getShimParams(); 845 if (!p.isEmpty()) { 846 *parameters = p; 847 return NO_ERROR; 848 } 849 } 850 851 ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.", 852 __FUNCTION__); 853 return INVALID_OPERATION; 854} 855 856// Can camera service trust the caller based on the calling UID? 857static bool isTrustedCallingUid(uid_t uid) { 858 switch (uid) { 859 case AID_MEDIA: // mediaserver 860 case AID_CAMERASERVER: // cameraserver 861 return true; 862 default: 863 return false; 864 } 865} 866 867status_t CameraService::validateConnectLocked(const String8& cameraId, /*inout*/int& clientUid, 868 /*inout*/int& clientPid) const { 869 870 int callingPid = getCallingPid(); 871 int callingUid = getCallingUid(); 872 873 // Check if we can trust clientUid 874 if (clientUid == USE_CALLING_UID) { 875 clientUid = callingUid; 876 } else if (!isTrustedCallingUid(callingUid)) { 877 ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected " 878 "(don't trust clientUid %d)", callingPid, callingUid, clientUid); 879 return PERMISSION_DENIED; 880 } 881 882 // Check if we can trust clientPid 883 if (clientPid == USE_CALLING_PID) { 884 clientPid = callingPid; 885 } else if (!isTrustedCallingUid(callingUid)) { 886 ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected " 887 "(don't trust clientPid %d)", callingPid, callingUid, clientPid); 888 return PERMISSION_DENIED; 889 } 890 891 // If it's not calling from cameraserver, check the permission. 892 if (callingPid != getpid() && 893 !checkPermission(String16("android.permission.CAMERA"), clientPid, clientUid)) { 894 ALOGE("Permission Denial: can't use the camera pid=%d, uid=%d", clientPid, clientUid); 895 return PERMISSION_DENIED; 896 } 897 898 // Only use passed in clientPid to check permission. Use calling PID as the client PID that's 899 // connected to camera service directly. 900 clientPid = callingPid; 901 902 if (!mModule) { 903 ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)", 904 callingPid); 905 return -ENODEV; 906 } 907 908 if (getCameraState(cameraId) == nullptr) { 909 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 910 cameraId.string()); 911 return -ENODEV; 912 } 913 914 userid_t clientUserId = multiuser_get_user_id(clientUid); 915 916 // Only allow clients who are being used by the current foreground device user, unless calling 917 // from our own process. 918 if (callingPid != getpid() && (mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) { 919 ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from " 920 "device user %d, currently allowed device users: %s)", callingPid, clientUserId, 921 toString(mAllowedUsers).string()); 922 return PERMISSION_DENIED; 923 } 924 925 return checkIfDeviceIsUsable(cameraId); 926} 927 928status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const { 929 auto cameraState = getCameraState(cameraId); 930 int callingPid = getCallingPid(); 931 if (cameraState == nullptr) { 932 ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid, 933 cameraId.string()); 934 return -ENODEV; 935 } 936 937 ICameraServiceListener::Status currentStatus = cameraState->getStatus(); 938 if (currentStatus == ICameraServiceListener::STATUS_NOT_PRESENT) { 939 ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)", 940 callingPid, cameraId.string()); 941 return -ENODEV; 942 } else if (currentStatus == ICameraServiceListener::STATUS_ENUMERATING) { 943 ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)", 944 callingPid, cameraId.string()); 945 return -EBUSY; 946 } 947 948 return NO_ERROR; 949} 950 951void CameraService::finishConnectLocked(const sp<BasicClient>& client, 952 const CameraService::DescriptorPtr& desc) { 953 954 // Make a descriptor for the incoming client 955 auto clientDescriptor = CameraService::CameraClientManager::makeClientDescriptor(client, desc); 956 auto evicted = mActiveClientManager.addAndEvict(clientDescriptor); 957 958 logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()), 959 String8(client->getPackageName())); 960 961 if (evicted.size() > 0) { 962 // This should never happen - clients should already have been removed in disconnect 963 for (auto& i : evicted) { 964 ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect", 965 __FUNCTION__, i->getKey().string()); 966 } 967 968 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly", 969 __FUNCTION__); 970 } 971 972 // And register a death notification for the client callback. Do 973 // this last to avoid Binder policy where a nested Binder 974 // transaction might be pre-empted to service the client death 975 // notification if the client process dies before linkToDeath is 976 // invoked. 977 sp<IBinder> remoteCallback = client->getRemote(); 978 if (remoteCallback != nullptr) { 979 remoteCallback->linkToDeath(this); 980 } 981} 982 983status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid, 984 apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName, 985 /*out*/ 986 sp<BasicClient>* client, 987 std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) { 988 ATRACE_CALL(); 989 status_t ret = NO_ERROR; 990 std::vector<DescriptorPtr> evictedClients; 991 DescriptorPtr clientDescriptor; 992 { 993 if (effectiveApiLevel == API_1) { 994 // If we are using API1, any existing client for this camera ID with the same remote 995 // should be returned rather than evicted to allow MediaRecorder to work properly. 996 997 auto current = mActiveClientManager.get(cameraId); 998 if (current != nullptr) { 999 auto clientSp = current->getValue(); 1000 if (clientSp.get() != nullptr) { // should never be needed 1001 if (!clientSp->canCastToApiClient(effectiveApiLevel)) { 1002 ALOGW("CameraService connect called from same client, but with a different" 1003 " API level, evicting prior client..."); 1004 } else if (clientSp->getRemote() == remoteCallback) { 1005 ALOGI("CameraService::connect X (PID %d) (second call from same" 1006 " app binder, returning the same client)", clientPid); 1007 *client = clientSp; 1008 return NO_ERROR; 1009 } 1010 } 1011 } 1012 } 1013 1014 // Return error if the device was unplugged or removed by the HAL for some reason 1015 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1016 return ret; 1017 } 1018 1019 // Get current active client PIDs 1020 std::vector<int> ownerPids(mActiveClientManager.getAllOwners()); 1021 ownerPids.push_back(clientPid); 1022 1023 // Use the value +PROCESS_STATE_NONEXISTENT, to avoid taking 1024 // address of PROCESS_STATE_NONEXISTENT as a reference argument 1025 // for the vector constructor. PROCESS_STATE_NONEXISTENT does 1026 // not have an out-of-class definition. 1027 std::vector<int> priorities(ownerPids.size(), +PROCESS_STATE_NONEXISTENT); 1028 1029 // Get priorites of all active PIDs 1030 ProcessInfoService::getProcessStatesFromPids(ownerPids.size(), &ownerPids[0], 1031 /*out*/&priorities[0]); 1032 1033 // Update all active clients' priorities 1034 std::map<int,int> pidToPriorityMap; 1035 for (size_t i = 0; i < ownerPids.size() - 1; i++) { 1036 pidToPriorityMap.emplace(ownerPids[i], getCameraPriorityFromProcState(priorities[i])); 1037 } 1038 mActiveClientManager.updatePriorities(pidToPriorityMap); 1039 1040 // Get state for the given cameraId 1041 auto state = getCameraState(cameraId); 1042 if (state == nullptr) { 1043 ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)", 1044 clientPid, cameraId.string()); 1045 return BAD_VALUE; 1046 } 1047 1048 // Make descriptor for incoming client 1049 clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId, 1050 sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()), 1051 state->getConflicting(), 1052 getCameraPriorityFromProcState(priorities[priorities.size() - 1]), clientPid); 1053 1054 // Find clients that would be evicted 1055 auto evicted = mActiveClientManager.wouldEvict(clientDescriptor); 1056 1057 // If the incoming client was 'evicted,' higher priority clients have the camera in the 1058 // background, so we cannot do evictions 1059 if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) { 1060 ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher" 1061 " priority).", clientPid); 1062 1063 sp<BasicClient> clientSp = clientDescriptor->getValue(); 1064 String8 curTime = getFormattedCurrentTime(); 1065 auto incompatibleClients = 1066 mActiveClientManager.getIncompatibleClients(clientDescriptor); 1067 1068 String8 msg = String8::format("%s : DENIED connect device %s client for package %s " 1069 "(PID %d, priority %d) due to eviction policy", curTime.string(), 1070 cameraId.string(), packageName.string(), clientPid, 1071 getCameraPriorityFromProcState(priorities[priorities.size() - 1])); 1072 1073 for (auto& i : incompatibleClients) { 1074 msg.appendFormat("\n - Blocked by existing device %s client for package %s" 1075 "(PID %" PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1076 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1077 i->getPriority()); 1078 ALOGE(" Conflicts with: Device %s, client package %s (PID %" 1079 PRId32 ", priority %" PRId32 ")", i->getKey().string(), 1080 String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(), 1081 i->getPriority()); 1082 } 1083 1084 // Log the client's attempt 1085 Mutex::Autolock l(mLogLock); 1086 mEventLog.add(msg); 1087 1088 return -EBUSY; 1089 } 1090 1091 for (auto& i : evicted) { 1092 sp<BasicClient> clientSp = i->getValue(); 1093 if (clientSp.get() == nullptr) { 1094 ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__); 1095 1096 // TODO: Remove this 1097 LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list", 1098 __FUNCTION__); 1099 mActiveClientManager.remove(i); 1100 continue; 1101 } 1102 1103 ALOGE("CameraService::connect evicting conflicting client for camera ID %s", 1104 i->getKey().string()); 1105 evictedClients.push_back(i); 1106 1107 // Log the clients evicted 1108 logEvent(String8::format("EVICT device %s client held by package %s (PID" 1109 " %" PRId32 ", priority %" PRId32 ")\n - Evicted by device %s client for" 1110 " package %s (PID %d, priority %" PRId32 ")", 1111 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1112 i->getOwnerId(), i->getPriority(), cameraId.string(), 1113 packageName.string(), clientPid, 1114 getCameraPriorityFromProcState(priorities[priorities.size() - 1]))); 1115 1116 // Notify the client of disconnection 1117 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1118 CaptureResultExtras()); 1119 } 1120 } 1121 1122 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1123 // other clients from connecting in mServiceLockWrapper if held 1124 mServiceLock.unlock(); 1125 1126 // Clear caller identity temporarily so client disconnect PID checks work correctly 1127 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1128 1129 // Destroy evicted clients 1130 for (auto& i : evictedClients) { 1131 // Disconnect is blocking, and should only have returned when HAL has cleaned up 1132 i->getValue()->disconnect(); // Clients will remove themselves from the active client list 1133 } 1134 1135 IPCThreadState::self()->restoreCallingIdentity(token); 1136 1137 for (const auto& i : evictedClients) { 1138 ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")", 1139 __FUNCTION__, i->getKey().string(), i->getOwnerId()); 1140 ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS); 1141 if (ret == TIMED_OUT) { 1142 ALOGE("%s: Timed out waiting for client for device %s to disconnect, " 1143 "current clients:\n%s", __FUNCTION__, i->getKey().string(), 1144 mActiveClientManager.toString().string()); 1145 return -EBUSY; 1146 } 1147 if (ret != NO_ERROR) { 1148 ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), " 1149 "current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret), 1150 ret, mActiveClientManager.toString().string()); 1151 return ret; 1152 } 1153 } 1154 1155 evictedClients.clear(); 1156 1157 // Once clients have been disconnected, relock 1158 mServiceLock.lock(); 1159 1160 // Check again if the device was unplugged or something while we weren't holding mServiceLock 1161 if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) { 1162 return ret; 1163 } 1164 1165 *partial = clientDescriptor; 1166 return NO_ERROR; 1167} 1168 1169status_t CameraService::connect( 1170 const sp<ICameraClient>& cameraClient, 1171 int cameraId, 1172 const String16& clientPackageName, 1173 int clientUid, 1174 int clientPid, 1175 /*out*/ 1176 sp<ICamera>& device) { 1177 1178 ATRACE_CALL(); 1179 status_t ret = NO_ERROR; 1180 String8 id = String8::format("%d", cameraId); 1181 sp<Client> client = nullptr; 1182 ret = connectHelper<ICameraClient,Client>(cameraClient, id, CAMERA_HAL_API_VERSION_UNSPECIFIED, 1183 clientPackageName, clientUid, clientPid, API_1, false, false, /*out*/client); 1184 1185 if(ret != NO_ERROR) { 1186 logRejected(id, getCallingPid(), String8(clientPackageName), 1187 String8::format("%s (%d)", strerror(-ret), ret)); 1188 return ret; 1189 } 1190 1191 device = client; 1192 return NO_ERROR; 1193} 1194 1195status_t CameraService::connectLegacy( 1196 const sp<ICameraClient>& cameraClient, 1197 int cameraId, int halVersion, 1198 const String16& clientPackageName, 1199 int clientUid, 1200 /*out*/ 1201 sp<ICamera>& device) { 1202 1203 ATRACE_CALL(); 1204 String8 id = String8::format("%d", cameraId); 1205 int apiVersion = mModule->getModuleApiVersion(); 1206 if (halVersion != CAMERA_HAL_API_VERSION_UNSPECIFIED && 1207 apiVersion < CAMERA_MODULE_API_VERSION_2_3) { 1208 /* 1209 * Either the HAL version is unspecified in which case this just creates 1210 * a camera client selected by the latest device version, or 1211 * it's a particular version in which case the HAL must supported 1212 * the open_legacy call 1213 */ 1214 ALOGE("%s: camera HAL module version %x doesn't support connecting to legacy HAL devices!", 1215 __FUNCTION__, apiVersion); 1216 logRejected(id, getCallingPid(), String8(clientPackageName), 1217 String8("HAL module version doesn't support legacy HAL connections")); 1218 return INVALID_OPERATION; 1219 } 1220 1221 status_t ret = NO_ERROR; 1222 sp<Client> client = nullptr; 1223 ret = connectHelper<ICameraClient,Client>(cameraClient, id, halVersion, clientPackageName, 1224 clientUid, USE_CALLING_PID, API_1, true, false, /*out*/client); 1225 1226 if(ret != NO_ERROR) { 1227 logRejected(id, getCallingPid(), String8(clientPackageName), 1228 String8::format("%s (%d)", strerror(-ret), ret)); 1229 return ret; 1230 } 1231 1232 device = client; 1233 return NO_ERROR; 1234} 1235 1236status_t CameraService::connectDevice( 1237 const sp<ICameraDeviceCallbacks>& cameraCb, 1238 int cameraId, 1239 const String16& clientPackageName, 1240 int clientUid, 1241 /*out*/ 1242 sp<ICameraDeviceUser>& device) { 1243 1244 ATRACE_CALL(); 1245 status_t ret = NO_ERROR; 1246 String8 id = String8::format("%d", cameraId); 1247 sp<CameraDeviceClient> client = nullptr; 1248 ret = connectHelper<ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id, 1249 CAMERA_HAL_API_VERSION_UNSPECIFIED, clientPackageName, clientUid, USE_CALLING_PID, 1250 API_2, false, false, /*out*/client); 1251 1252 if(ret != NO_ERROR) { 1253 logRejected(id, getCallingPid(), String8(clientPackageName), 1254 String8::format("%s (%d)", strerror(-ret), ret)); 1255 return ret; 1256 } 1257 1258 device = client; 1259 return NO_ERROR; 1260} 1261 1262status_t CameraService::setTorchMode(const String16& cameraId, bool enabled, 1263 const sp<IBinder>& clientBinder) { 1264 1265 ATRACE_CALL(); 1266 if (enabled && clientBinder == nullptr) { 1267 ALOGE("%s: torch client binder is NULL", __FUNCTION__); 1268 return -EINVAL; 1269 } 1270 1271 String8 id = String8(cameraId.string()); 1272 int uid = getCallingUid(); 1273 1274 // verify id is valid. 1275 auto state = getCameraState(id); 1276 if (state == nullptr) { 1277 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1278 return -EINVAL; 1279 } 1280 1281 ICameraServiceListener::Status cameraStatus = state->getStatus(); 1282 if (cameraStatus != ICameraServiceListener::STATUS_PRESENT && 1283 cameraStatus != ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1284 ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string()); 1285 return -EINVAL; 1286 } 1287 1288 { 1289 Mutex::Autolock al(mTorchStatusMutex); 1290 ICameraServiceListener::TorchStatus status; 1291 status_t res = getTorchStatusLocked(id, &status); 1292 if (res) { 1293 ALOGE("%s: getting current torch status failed for camera %s", 1294 __FUNCTION__, id.string()); 1295 return -EINVAL; 1296 } 1297 1298 if (status == ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE) { 1299 if (cameraStatus == ICameraServiceListener::STATUS_NOT_AVAILABLE) { 1300 ALOGE("%s: torch mode of camera %s is not available because " 1301 "camera is in use", __FUNCTION__, id.string()); 1302 return -EBUSY; 1303 } else { 1304 ALOGE("%s: torch mode of camera %s is not available due to " 1305 "insufficient resources", __FUNCTION__, id.string()); 1306 return -EUSERS; 1307 } 1308 } 1309 } 1310 1311 { 1312 // Update UID map - this is used in the torch status changed callbacks, so must be done 1313 // before setTorchMode 1314 Mutex::Autolock al(mTorchUidMapMutex); 1315 if (mTorchUidMap.find(id) == mTorchUidMap.end()) { 1316 mTorchUidMap[id].first = uid; 1317 mTorchUidMap[id].second = uid; 1318 } else { 1319 // Set the pending UID 1320 mTorchUidMap[id].first = uid; 1321 } 1322 } 1323 1324 status_t res = mFlashlight->setTorchMode(id, enabled); 1325 1326 if (res) { 1327 ALOGE("%s: setting torch mode of camera %s to %d failed. %s (%d)", 1328 __FUNCTION__, id.string(), enabled, strerror(-res), res); 1329 return res; 1330 } 1331 1332 { 1333 // update the link to client's death 1334 Mutex::Autolock al(mTorchClientMapMutex); 1335 ssize_t index = mTorchClientMap.indexOfKey(id); 1336 if (enabled) { 1337 if (index == NAME_NOT_FOUND) { 1338 mTorchClientMap.add(id, clientBinder); 1339 } else { 1340 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1341 mTorchClientMap.replaceValueAt(index, clientBinder); 1342 } 1343 clientBinder->linkToDeath(this); 1344 } else if (index != NAME_NOT_FOUND) { 1345 mTorchClientMap.valueAt(index)->unlinkToDeath(this); 1346 } 1347 } 1348 1349 return OK; 1350} 1351 1352void CameraService::notifySystemEvent(int32_t eventId, const int32_t* args, size_t length) { 1353 ATRACE_CALL(); 1354 1355 switch(eventId) { 1356 case ICameraService::USER_SWITCHED: { 1357 doUserSwitch(/*newUserIds*/args, /*length*/length); 1358 break; 1359 } 1360 case ICameraService::NO_EVENT: 1361 default: { 1362 ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__, 1363 eventId); 1364 break; 1365 } 1366 } 1367} 1368 1369status_t CameraService::addListener(const sp<ICameraServiceListener>& listener) { 1370 ATRACE_CALL(); 1371 1372 ALOGV("%s: Add listener %p", __FUNCTION__, listener.get()); 1373 1374 if (listener == nullptr) { 1375 ALOGE("%s: Listener must not be null", __FUNCTION__); 1376 return BAD_VALUE; 1377 } 1378 1379 Mutex::Autolock lock(mServiceLock); 1380 1381 { 1382 Mutex::Autolock lock(mStatusListenerLock); 1383 for (auto& it : mListenerList) { 1384 if (IInterface::asBinder(it) == IInterface::asBinder(listener)) { 1385 ALOGW("%s: Tried to add listener %p which was already subscribed", 1386 __FUNCTION__, listener.get()); 1387 return ALREADY_EXISTS; 1388 } 1389 } 1390 1391 mListenerList.push_back(listener); 1392 } 1393 1394 1395 /* Immediately signal current status to this listener only */ 1396 { 1397 Mutex::Autolock lock(mCameraStatesLock); 1398 for (auto& i : mCameraStates) { 1399 // TODO: Update binder to use String16 for camera IDs and remove; 1400 int id = cameraIdToInt(i.first); 1401 if (id == -1) continue; 1402 1403 listener->onStatusChanged(i.second->getStatus(), id); 1404 } 1405 } 1406 1407 /* Immediately signal current torch status to this listener only */ 1408 { 1409 Mutex::Autolock al(mTorchStatusMutex); 1410 for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) { 1411 String16 id = String16(mTorchStatusMap.keyAt(i).string()); 1412 listener->onTorchStatusChanged(mTorchStatusMap.valueAt(i), id); 1413 } 1414 } 1415 1416 return OK; 1417} 1418 1419status_t CameraService::removeListener(const sp<ICameraServiceListener>& listener) { 1420 ATRACE_CALL(); 1421 1422 ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get()); 1423 1424 if (listener == 0) { 1425 ALOGE("%s: Listener must not be null", __FUNCTION__); 1426 return BAD_VALUE; 1427 } 1428 1429 Mutex::Autolock lock(mServiceLock); 1430 1431 { 1432 Mutex::Autolock lock(mStatusListenerLock); 1433 for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) { 1434 if (IInterface::asBinder(*it) == IInterface::asBinder(listener)) { 1435 mListenerList.erase(it); 1436 return OK; 1437 } 1438 } 1439 } 1440 1441 ALOGW("%s: Tried to remove a listener %p which was not subscribed", 1442 __FUNCTION__, listener.get()); 1443 1444 return BAD_VALUE; 1445} 1446 1447status_t CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) { 1448 1449 ATRACE_CALL(); 1450 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1451 1452 if (parameters == NULL) { 1453 ALOGE("%s: parameters must not be null", __FUNCTION__); 1454 return BAD_VALUE; 1455 } 1456 1457 status_t ret = 0; 1458 1459 CameraParameters shimParams; 1460 if ((ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)) != OK) { 1461 // Error logged by caller 1462 return ret; 1463 } 1464 1465 String8 shimParamsString8 = shimParams.flatten(); 1466 String16 shimParamsString16 = String16(shimParamsString8); 1467 1468 *parameters = shimParamsString16; 1469 1470 return OK; 1471} 1472 1473status_t CameraService::supportsCameraApi(int cameraId, int apiVersion) { 1474 ATRACE_CALL(); 1475 1476 ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId); 1477 1478 switch (apiVersion) { 1479 case API_VERSION_1: 1480 case API_VERSION_2: 1481 break; 1482 default: 1483 ALOGE("%s: Bad API version %d", __FUNCTION__, apiVersion); 1484 return BAD_VALUE; 1485 } 1486 1487 int facing = -1; 1488 int deviceVersion = getDeviceVersion(cameraId, &facing); 1489 1490 switch(deviceVersion) { 1491 case CAMERA_DEVICE_API_VERSION_1_0: 1492 case CAMERA_DEVICE_API_VERSION_3_0: 1493 case CAMERA_DEVICE_API_VERSION_3_1: 1494 if (apiVersion == API_VERSION_2) { 1495 ALOGV("%s: Camera id %d uses HAL prior to HAL3.2, doesn't support api2 without shim", 1496 __FUNCTION__, cameraId); 1497 return -EOPNOTSUPP; 1498 } else { // if (apiVersion == API_VERSION_1) { 1499 ALOGV("%s: Camera id %d uses older HAL before 3.2, but api1 is always supported", 1500 __FUNCTION__, cameraId); 1501 return OK; 1502 } 1503 case CAMERA_DEVICE_API_VERSION_3_2: 1504 case CAMERA_DEVICE_API_VERSION_3_3: 1505 ALOGV("%s: Camera id %d uses HAL3.2 or newer, supports api1/api2 directly", 1506 __FUNCTION__, cameraId); 1507 return OK; 1508 case -1: 1509 ALOGE("%s: Invalid camera id %d", __FUNCTION__, cameraId); 1510 return BAD_VALUE; 1511 default: 1512 ALOGE("%s: Unknown camera device HAL version: %d", __FUNCTION__, deviceVersion); 1513 return INVALID_OPERATION; 1514 } 1515 1516 return OK; 1517} 1518 1519void CameraService::removeByClient(const BasicClient* client) { 1520 Mutex::Autolock lock(mServiceLock); 1521 for (auto& i : mActiveClientManager.getAll()) { 1522 auto clientSp = i->getValue(); 1523 if (clientSp.get() == client) { 1524 mActiveClientManager.remove(i); 1525 } 1526 } 1527} 1528 1529bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) { 1530 const int callingPid = getCallingPid(); 1531 const int servicePid = getpid(); 1532 bool ret = false; 1533 { 1534 // Acquire mServiceLock and prevent other clients from connecting 1535 std::unique_ptr<AutoConditionLock> lock = 1536 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1537 1538 1539 std::vector<sp<BasicClient>> evicted; 1540 for (auto& i : mActiveClientManager.getAll()) { 1541 auto clientSp = i->getValue(); 1542 if (clientSp.get() == nullptr) { 1543 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1544 mActiveClientManager.remove(i); 1545 continue; 1546 } 1547 if (remote == clientSp->getRemote() && (callingPid == servicePid || 1548 callingPid == clientSp->getClientPid())) { 1549 mActiveClientManager.remove(i); 1550 evicted.push_back(clientSp); 1551 1552 // Notify the client of disconnection 1553 clientSp->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED, 1554 CaptureResultExtras()); 1555 } 1556 } 1557 1558 // Do not hold mServiceLock while disconnecting clients, but retain the condition blocking 1559 // other clients from connecting in mServiceLockWrapper if held 1560 mServiceLock.unlock(); 1561 1562 // Do not clear caller identity, remote caller should be client proccess 1563 1564 for (auto& i : evicted) { 1565 if (i.get() != nullptr) { 1566 i->disconnect(); 1567 ret = true; 1568 } 1569 } 1570 1571 // Reacquire mServiceLock 1572 mServiceLock.lock(); 1573 1574 } // lock is destroyed, allow further connect calls 1575 1576 return ret; 1577} 1578 1579 1580/** 1581 * Check camera capabilities, such as support for basic color operation 1582 * Also check that the device HAL version is still in support 1583 */ 1584int CameraService::checkCameraCapabilities(int id, camera_info info, int *latestStrangeCameraId) { 1585 // device_version undefined in CAMERA_MODULE_API_VERSION_1_0, 1586 // All CAMERA_MODULE_API_VERSION_1_0 devices are backward-compatible 1587 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0) { 1588 // Verify the device version is in the supported range 1589 switch (info.device_version) { 1590 case CAMERA_DEVICE_API_VERSION_1_0: 1591 case CAMERA_DEVICE_API_VERSION_3_0: 1592 case CAMERA_DEVICE_API_VERSION_3_1: 1593 case CAMERA_DEVICE_API_VERSION_3_2: 1594 case CAMERA_DEVICE_API_VERSION_3_3: 1595 // in support 1596 break; 1597 case CAMERA_DEVICE_API_VERSION_2_0: 1598 case CAMERA_DEVICE_API_VERSION_2_1: 1599 // no longer supported 1600 default: 1601 ALOGE("%s: Device %d has HAL version %x, which is not supported", 1602 __FUNCTION__, id, info.device_version); 1603 String8 msg = String8::format( 1604 "Unsupported device HAL version %x for device %d", 1605 info.device_version, id); 1606 logServiceError(msg.string(), NO_INIT); 1607 return NO_INIT; 1608 } 1609 } 1610 1611 // Assume all devices pre-v3.3 are backward-compatible 1612 bool isBackwardCompatible = true; 1613 if (mModule->getModuleApiVersion() >= CAMERA_MODULE_API_VERSION_2_0 1614 && info.device_version >= CAMERA_DEVICE_API_VERSION_3_3) { 1615 isBackwardCompatible = false; 1616 status_t res; 1617 camera_metadata_ro_entry_t caps; 1618 res = find_camera_metadata_ro_entry( 1619 info.static_camera_characteristics, 1620 ANDROID_REQUEST_AVAILABLE_CAPABILITIES, 1621 &caps); 1622 if (res != 0) { 1623 ALOGW("%s: Unable to find camera capabilities for camera device %d", 1624 __FUNCTION__, id); 1625 caps.count = 0; 1626 } 1627 for (size_t i = 0; i < caps.count; i++) { 1628 if (caps.data.u8[i] == 1629 ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) { 1630 isBackwardCompatible = true; 1631 break; 1632 } 1633 } 1634 } 1635 1636 if (!isBackwardCompatible) { 1637 mNumberOfNormalCameras--; 1638 *latestStrangeCameraId = id; 1639 } else { 1640 if (id > *latestStrangeCameraId) { 1641 ALOGE("%s: Normal camera ID %d higher than strange camera ID %d. " 1642 "This is not allowed due backward-compatibility requirements", 1643 __FUNCTION__, id, *latestStrangeCameraId); 1644 logServiceError("Invalid order of camera devices", NO_INIT); 1645 mNumberOfCameras = 0; 1646 mNumberOfNormalCameras = 0; 1647 return NO_INIT; 1648 } 1649 } 1650 return OK; 1651} 1652 1653std::shared_ptr<CameraService::CameraState> CameraService::getCameraState( 1654 const String8& cameraId) const { 1655 std::shared_ptr<CameraState> state; 1656 { 1657 Mutex::Autolock lock(mCameraStatesLock); 1658 auto iter = mCameraStates.find(cameraId); 1659 if (iter != mCameraStates.end()) { 1660 state = iter->second; 1661 } 1662 } 1663 return state; 1664} 1665 1666sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) { 1667 // Remove from active clients list 1668 auto clientDescriptorPtr = mActiveClientManager.remove(cameraId); 1669 if (clientDescriptorPtr == nullptr) { 1670 ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__, 1671 cameraId.string()); 1672 return sp<BasicClient>{nullptr}; 1673 } 1674 1675 return clientDescriptorPtr->getValue(); 1676} 1677 1678void CameraService::doUserSwitch(const int32_t* newUserId, size_t length) { 1679 // Acquire mServiceLock and prevent other clients from connecting 1680 std::unique_ptr<AutoConditionLock> lock = 1681 AutoConditionLock::waitAndAcquire(mServiceLockWrapper); 1682 1683 std::set<userid_t> newAllowedUsers; 1684 for (size_t i = 0; i < length; i++) { 1685 if (newUserId[i] < 0) { 1686 ALOGE("%s: Bad user ID %d given during user switch, ignoring.", 1687 __FUNCTION__, newUserId[i]); 1688 return; 1689 } 1690 newAllowedUsers.insert(static_cast<userid_t>(newUserId[i])); 1691 } 1692 1693 1694 if (newAllowedUsers == mAllowedUsers) { 1695 ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__); 1696 return; 1697 } 1698 1699 logUserSwitch(mAllowedUsers, newAllowedUsers); 1700 1701 mAllowedUsers = std::move(newAllowedUsers); 1702 1703 // Current user has switched, evict all current clients. 1704 std::vector<sp<BasicClient>> evicted; 1705 for (auto& i : mActiveClientManager.getAll()) { 1706 auto clientSp = i->getValue(); 1707 1708 if (clientSp.get() == nullptr) { 1709 ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__); 1710 continue; 1711 } 1712 1713 // Don't evict clients that are still allowed. 1714 uid_t clientUid = clientSp->getClientUid(); 1715 userid_t clientUserId = multiuser_get_user_id(clientUid); 1716 if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) { 1717 continue; 1718 } 1719 1720 evicted.push_back(clientSp); 1721 1722 String8 curTime = getFormattedCurrentTime(); 1723 1724 ALOGE("Evicting conflicting client for camera ID %s due to user change", 1725 i->getKey().string()); 1726 1727 // Log the clients evicted 1728 logEvent(String8::format("EVICT device %s client held by package %s (PID %" 1729 PRId32 ", priority %" PRId32 ")\n - Evicted due to user switch.", 1730 i->getKey().string(), String8{clientSp->getPackageName()}.string(), 1731 i->getOwnerId(), i->getPriority())); 1732 1733 } 1734 1735 // Do not hold mServiceLock while disconnecting clients, but retain the condition 1736 // blocking other clients from connecting in mServiceLockWrapper if held. 1737 mServiceLock.unlock(); 1738 1739 // Clear caller identity temporarily so client disconnect PID checks work correctly 1740 int64_t token = IPCThreadState::self()->clearCallingIdentity(); 1741 1742 for (auto& i : evicted) { 1743 i->disconnect(); 1744 } 1745 1746 IPCThreadState::self()->restoreCallingIdentity(token); 1747 1748 // Reacquire mServiceLock 1749 mServiceLock.lock(); 1750} 1751 1752void CameraService::logEvent(const char* event) { 1753 String8 curTime = getFormattedCurrentTime(); 1754 Mutex::Autolock l(mLogLock); 1755 mEventLog.add(String8::format("%s : %s", curTime.string(), event)); 1756} 1757 1758void CameraService::logDisconnected(const char* cameraId, int clientPid, 1759 const char* clientPackage) { 1760 // Log the clients evicted 1761 logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId, 1762 clientPackage, clientPid)); 1763} 1764 1765void CameraService::logConnected(const char* cameraId, int clientPid, 1766 const char* clientPackage) { 1767 // Log the clients evicted 1768 logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId, 1769 clientPackage, clientPid)); 1770} 1771 1772void CameraService::logRejected(const char* cameraId, int clientPid, 1773 const char* clientPackage, const char* reason) { 1774 // Log the client rejected 1775 logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)", 1776 cameraId, clientPackage, clientPid, reason)); 1777} 1778 1779void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds, 1780 const std::set<userid_t>& newUserIds) { 1781 String8 newUsers = toString(newUserIds); 1782 String8 oldUsers = toString(oldUserIds); 1783 // Log the new and old users 1784 logEvent(String8::format("USER_SWITCH previous allowed users: %s , current allowed users: %s", 1785 oldUsers.string(), newUsers.string())); 1786} 1787 1788void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) { 1789 // Log the device removal 1790 logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason)); 1791} 1792 1793void CameraService::logDeviceAdded(const char* cameraId, const char* reason) { 1794 // Log the device removal 1795 logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason)); 1796} 1797 1798void CameraService::logClientDied(int clientPid, const char* reason) { 1799 // Log the device removal 1800 logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason)); 1801} 1802 1803void CameraService::logServiceError(const char* msg, int errorCode) { 1804 String8 curTime = getFormattedCurrentTime(); 1805 logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(-errorCode))); 1806} 1807 1808status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply, 1809 uint32_t flags) { 1810 1811 const int pid = getCallingPid(); 1812 const int selfPid = getpid(); 1813 1814 // Permission checks 1815 switch (code) { 1816 case BnCameraService::NOTIFY_SYSTEM_EVENT: { 1817 if (pid != selfPid) { 1818 // Ensure we're being called by system_server, or similar process with 1819 // permissions to notify the camera service about system events 1820 if (!checkCallingPermission( 1821 String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) { 1822 const int uid = getCallingUid(); 1823 ALOGE("Permission Denial: cannot send updates to camera service about system" 1824 " events from pid=%d, uid=%d", pid, uid); 1825 return PERMISSION_DENIED; 1826 } 1827 } 1828 break; 1829 } 1830 } 1831 1832 return BnCameraService::onTransact(code, data, reply, flags); 1833} 1834 1835// We share the media players for shutter and recording sound for all clients. 1836// A reference count is kept to determine when we will actually release the 1837// media players. 1838 1839MediaPlayer* CameraService::newMediaPlayer(const char *file) { 1840 MediaPlayer* mp = new MediaPlayer(); 1841 if (mp->setDataSource(NULL /* httpService */, file, NULL) == NO_ERROR) { 1842 mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE); 1843 mp->prepare(); 1844 } else { 1845 ALOGE("Failed to load CameraService sounds: %s", file); 1846 return NULL; 1847 } 1848 return mp; 1849} 1850 1851void CameraService::loadSound() { 1852 ATRACE_CALL(); 1853 1854 Mutex::Autolock lock(mSoundLock); 1855 LOG1("CameraService::loadSound ref=%d", mSoundRef); 1856 if (mSoundRef++) return; 1857 1858 mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg"); 1859 mSoundPlayer[SOUND_RECORDING_START] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg"); 1860 mSoundPlayer[SOUND_RECORDING_STOP] = newMediaPlayer("/system/media/audio/ui/VideoStop.ogg"); 1861} 1862 1863void CameraService::releaseSound() { 1864 Mutex::Autolock lock(mSoundLock); 1865 LOG1("CameraService::releaseSound ref=%d", mSoundRef); 1866 if (--mSoundRef) return; 1867 1868 for (int i = 0; i < NUM_SOUNDS; i++) { 1869 if (mSoundPlayer[i] != 0) { 1870 mSoundPlayer[i]->disconnect(); 1871 mSoundPlayer[i].clear(); 1872 } 1873 } 1874} 1875 1876void CameraService::playSound(sound_kind kind) { 1877 ATRACE_CALL(); 1878 1879 LOG1("playSound(%d)", kind); 1880 Mutex::Autolock lock(mSoundLock); 1881 sp<MediaPlayer> player = mSoundPlayer[kind]; 1882 if (player != 0) { 1883 player->seekTo(0); 1884 player->start(); 1885 } 1886} 1887 1888// ---------------------------------------------------------------------------- 1889 1890CameraService::Client::Client(const sp<CameraService>& cameraService, 1891 const sp<ICameraClient>& cameraClient, 1892 const String16& clientPackageName, 1893 int cameraId, int cameraFacing, 1894 int clientPid, uid_t clientUid, 1895 int servicePid) : 1896 CameraService::BasicClient(cameraService, 1897 IInterface::asBinder(cameraClient), 1898 clientPackageName, 1899 cameraId, cameraFacing, 1900 clientPid, clientUid, 1901 servicePid) 1902{ 1903 int callingPid = getCallingPid(); 1904 LOG1("Client::Client E (pid %d, id %d)", callingPid, cameraId); 1905 1906 mRemoteCallback = cameraClient; 1907 1908 cameraService->loadSound(); 1909 1910 LOG1("Client::Client X (pid %d, id %d)", callingPid, cameraId); 1911} 1912 1913// tear down the client 1914CameraService::Client::~Client() { 1915 ALOGV("~Client"); 1916 mDestructionStarted = true; 1917 1918 mCameraService->releaseSound(); 1919 // unconditionally disconnect. function is idempotent 1920 Client::disconnect(); 1921} 1922 1923CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService, 1924 const sp<IBinder>& remoteCallback, 1925 const String16& clientPackageName, 1926 int cameraId, int cameraFacing, 1927 int clientPid, uid_t clientUid, 1928 int servicePid): 1929 mClientPackageName(clientPackageName), mDisconnected(false) 1930{ 1931 mCameraService = cameraService; 1932 mRemoteBinder = remoteCallback; 1933 mCameraId = cameraId; 1934 mCameraFacing = cameraFacing; 1935 mClientPid = clientPid; 1936 mClientUid = clientUid; 1937 mServicePid = servicePid; 1938 mOpsActive = false; 1939 mDestructionStarted = false; 1940} 1941 1942CameraService::BasicClient::~BasicClient() { 1943 ALOGV("~BasicClient"); 1944 mDestructionStarted = true; 1945} 1946 1947void CameraService::BasicClient::disconnect() { 1948 if (mDisconnected) { 1949 return; 1950 } 1951 mDisconnected = true; 1952 1953 mCameraService->removeByClient(this); 1954 mCameraService->logDisconnected(String8::format("%d", mCameraId), mClientPid, 1955 String8(mClientPackageName)); 1956 1957 sp<IBinder> remote = getRemote(); 1958 if (remote != nullptr) { 1959 remote->unlinkToDeath(mCameraService); 1960 } 1961 1962 finishCameraOps(); 1963 ALOGI("%s: Disconnected client for camera %d for PID %d", __FUNCTION__, mCameraId, mClientPid); 1964 1965 // client shouldn't be able to call into us anymore 1966 mClientPid = 0; 1967} 1968 1969status_t CameraService::BasicClient::dump(int, const Vector<String16>&) { 1970 // No dumping of clients directly over Binder, 1971 // must go through CameraService::dump 1972 android_errorWriteWithInfoLog(SN_EVENT_LOG_ID, "26265403", 1973 IPCThreadState::self()->getCallingUid(), NULL, 0); 1974 return OK; 1975} 1976 1977String16 CameraService::BasicClient::getPackageName() const { 1978 return mClientPackageName; 1979} 1980 1981 1982int CameraService::BasicClient::getClientPid() const { 1983 return mClientPid; 1984} 1985 1986uid_t CameraService::BasicClient::getClientUid() const { 1987 return mClientUid; 1988} 1989 1990bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const { 1991 // Defaults to API2. 1992 return level == API_2; 1993} 1994 1995status_t CameraService::BasicClient::startCameraOps() { 1996 ATRACE_CALL(); 1997 1998 int32_t res; 1999 // Notify app ops that the camera is not available 2000 mOpsCallback = new OpsCallback(this); 2001 2002 { 2003 ALOGV("%s: Start camera ops, package name = %s, client UID = %d", 2004 __FUNCTION__, String8(mClientPackageName).string(), mClientUid); 2005 } 2006 2007 mAppOpsManager.startWatchingMode(AppOpsManager::OP_CAMERA, 2008 mClientPackageName, mOpsCallback); 2009 res = mAppOpsManager.startOp(AppOpsManager::OP_CAMERA, 2010 mClientUid, mClientPackageName); 2011 2012 if (res == AppOpsManager::MODE_ERRORED) { 2013 ALOGI("Camera %d: Access for \"%s\" has been revoked", 2014 mCameraId, String8(mClientPackageName).string()); 2015 return PERMISSION_DENIED; 2016 } 2017 2018 if (res == AppOpsManager::MODE_IGNORED) { 2019 ALOGI("Camera %d: Access for \"%s\" has been restricted", 2020 mCameraId, String8(mClientPackageName).string()); 2021 // Return the same error as for device policy manager rejection 2022 return -EACCES; 2023 } 2024 2025 mOpsActive = true; 2026 2027 // Transition device availability listeners from PRESENT -> NOT_AVAILABLE 2028 mCameraService->updateStatus(ICameraServiceListener::STATUS_NOT_AVAILABLE, 2029 String8::format("%d", mCameraId)); 2030 2031 // Transition device state to OPEN 2032 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_OPEN, 2033 String8::format("%d", mCameraId)); 2034 2035 return OK; 2036} 2037 2038status_t CameraService::BasicClient::finishCameraOps() { 2039 ATRACE_CALL(); 2040 2041 // Check if startCameraOps succeeded, and if so, finish the camera op 2042 if (mOpsActive) { 2043 // Notify app ops that the camera is available again 2044 mAppOpsManager.finishOp(AppOpsManager::OP_CAMERA, mClientUid, 2045 mClientPackageName); 2046 mOpsActive = false; 2047 2048 auto rejected = {ICameraServiceListener::STATUS_NOT_PRESENT, 2049 ICameraServiceListener::STATUS_ENUMERATING}; 2050 2051 // Transition to PRESENT if the camera is not in either of the rejected states 2052 mCameraService->updateStatus(ICameraServiceListener::STATUS_PRESENT, 2053 String8::format("%d", mCameraId), rejected); 2054 2055 // Transition device state to CLOSED 2056 mCameraService->updateProxyDeviceState(ICameraServiceProxy::CAMERA_STATE_CLOSED, 2057 String8::format("%d", mCameraId)); 2058 2059 // Notify flashlight that a camera device is closed. 2060 mCameraService->mFlashlight->deviceClosed( 2061 String8::format("%d", mCameraId)); 2062 } 2063 // Always stop watching, even if no camera op is active 2064 if (mOpsCallback != NULL) { 2065 mAppOpsManager.stopWatchingMode(mOpsCallback); 2066 } 2067 mOpsCallback.clear(); 2068 2069 return OK; 2070} 2071 2072void CameraService::BasicClient::opChanged(int32_t op, const String16& packageName) { 2073 ATRACE_CALL(); 2074 2075 String8 name(packageName); 2076 String8 myName(mClientPackageName); 2077 2078 if (op != AppOpsManager::OP_CAMERA) { 2079 ALOGW("Unexpected app ops notification received: %d", op); 2080 return; 2081 } 2082 2083 int32_t res; 2084 res = mAppOpsManager.checkOp(AppOpsManager::OP_CAMERA, 2085 mClientUid, mClientPackageName); 2086 ALOGV("checkOp returns: %d, %s ", res, 2087 res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" : 2088 res == AppOpsManager::MODE_IGNORED ? "IGNORED" : 2089 res == AppOpsManager::MODE_ERRORED ? "ERRORED" : 2090 "UNKNOWN"); 2091 2092 if (res != AppOpsManager::MODE_ALLOWED) { 2093 ALOGI("Camera %d: Access for \"%s\" revoked", mCameraId, 2094 myName.string()); 2095 // Reset the client PID to allow server-initiated disconnect, 2096 // and to prevent further calls by client. 2097 mClientPid = getCallingPid(); 2098 CaptureResultExtras resultExtras; // a dummy result (invalid) 2099 notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE, resultExtras); 2100 disconnect(); 2101 } 2102} 2103 2104// ---------------------------------------------------------------------------- 2105 2106// Provide client strong pointer for callbacks. 2107sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) { 2108 String8 cameraId = String8::format("%d", (int)(intptr_t) user); 2109 auto clientDescriptor = gCameraService->mActiveClientManager.get(cameraId); 2110 if (clientDescriptor != nullptr) { 2111 return sp<Client>{ 2112 static_cast<Client*>(clientDescriptor->getValue().get())}; 2113 } 2114 return sp<Client>{nullptr}; 2115} 2116 2117void CameraService::Client::notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 2118 const CaptureResultExtras& resultExtras) { 2119 (void) errorCode; 2120 (void) resultExtras; 2121 if (mRemoteCallback != NULL) { 2122 mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_RELEASED, 0); 2123 } else { 2124 ALOGE("mRemoteCallback is NULL!!"); 2125 } 2126} 2127 2128// NOTE: function is idempotent 2129void CameraService::Client::disconnect() { 2130 ALOGV("Client::disconnect"); 2131 BasicClient::disconnect(); 2132} 2133 2134bool CameraService::Client::canCastToApiClient(apiLevel level) const { 2135 return level == API_1; 2136} 2137 2138CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client): 2139 mClient(client) { 2140} 2141 2142void CameraService::Client::OpsCallback::opChanged(int32_t op, 2143 const String16& packageName) { 2144 sp<BasicClient> client = mClient.promote(); 2145 if (client != NULL) { 2146 client->opChanged(op, packageName); 2147 } 2148} 2149 2150// ---------------------------------------------------------------------------- 2151// CameraState 2152// ---------------------------------------------------------------------------- 2153 2154CameraService::CameraState::CameraState(const String8& id, int cost, 2155 const std::set<String8>& conflicting) : mId(id), 2156 mStatus(ICameraServiceListener::STATUS_PRESENT), mCost(cost), mConflicting(conflicting) {} 2157 2158CameraService::CameraState::~CameraState() {} 2159 2160ICameraServiceListener::Status CameraService::CameraState::getStatus() const { 2161 Mutex::Autolock lock(mStatusLock); 2162 return mStatus; 2163} 2164 2165CameraParameters CameraService::CameraState::getShimParams() const { 2166 return mShimParams; 2167} 2168 2169void CameraService::CameraState::setShimParams(const CameraParameters& params) { 2170 mShimParams = params; 2171} 2172 2173int CameraService::CameraState::getCost() const { 2174 return mCost; 2175} 2176 2177std::set<String8> CameraService::CameraState::getConflicting() const { 2178 return mConflicting; 2179} 2180 2181String8 CameraService::CameraState::getId() const { 2182 return mId; 2183} 2184 2185// ---------------------------------------------------------------------------- 2186// ClientEventListener 2187// ---------------------------------------------------------------------------- 2188 2189void CameraService::ClientEventListener::onClientAdded( 2190 const resource_policy::ClientDescriptor<String8, 2191 sp<CameraService::BasicClient>>& descriptor) { 2192 auto basicClient = descriptor.getValue(); 2193 if (basicClient.get() != nullptr) { 2194 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2195 notifier.noteStartCamera(descriptor.getKey(), 2196 static_cast<int>(basicClient->getClientUid())); 2197 } 2198} 2199 2200void CameraService::ClientEventListener::onClientRemoved( 2201 const resource_policy::ClientDescriptor<String8, 2202 sp<CameraService::BasicClient>>& descriptor) { 2203 auto basicClient = descriptor.getValue(); 2204 if (basicClient.get() != nullptr) { 2205 BatteryNotifier& notifier(BatteryNotifier::getInstance()); 2206 notifier.noteStopCamera(descriptor.getKey(), 2207 static_cast<int>(basicClient->getClientUid())); 2208 } 2209} 2210 2211 2212// ---------------------------------------------------------------------------- 2213// CameraClientManager 2214// ---------------------------------------------------------------------------- 2215 2216CameraService::CameraClientManager::CameraClientManager() { 2217 setListener(std::make_shared<ClientEventListener>()); 2218} 2219 2220CameraService::CameraClientManager::~CameraClientManager() {} 2221 2222sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient( 2223 const String8& id) const { 2224 auto descriptor = get(id); 2225 if (descriptor == nullptr) { 2226 return sp<BasicClient>{nullptr}; 2227 } 2228 return descriptor->getValue(); 2229} 2230 2231String8 CameraService::CameraClientManager::toString() const { 2232 auto all = getAll(); 2233 String8 ret("["); 2234 bool hasAny = false; 2235 for (auto& i : all) { 2236 hasAny = true; 2237 String8 key = i->getKey(); 2238 int32_t cost = i->getCost(); 2239 int32_t pid = i->getOwnerId(); 2240 int32_t priority = i->getPriority(); 2241 auto conflicting = i->getConflicting(); 2242 auto clientSp = i->getValue(); 2243 String8 packageName; 2244 userid_t clientUserId = 0; 2245 if (clientSp.get() != nullptr) { 2246 packageName = String8{clientSp->getPackageName()}; 2247 uid_t clientUid = clientSp->getClientUid(); 2248 clientUserId = multiuser_get_user_id(clientUid); 2249 } 2250 ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Priority: %" 2251 PRId32 ", ", key.string(), cost, pid, priority); 2252 2253 if (clientSp.get() != nullptr) { 2254 ret.appendFormat("User Id: %d, ", clientUserId); 2255 } 2256 if (packageName.size() != 0) { 2257 ret.appendFormat("Client Package Name: %s", packageName.string()); 2258 } 2259 2260 ret.append(", Conflicting Client Devices: {"); 2261 for (auto& j : conflicting) { 2262 ret.appendFormat("%s, ", j.string()); 2263 } 2264 ret.append("})"); 2265 } 2266 if (hasAny) ret.append("\n"); 2267 ret.append("]\n"); 2268 return ret; 2269} 2270 2271CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2272 const String8& key, const sp<BasicClient>& value, int32_t cost, 2273 const std::set<String8>& conflictingKeys, int32_t priority, int32_t ownerId) { 2274 2275 return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>( 2276 key, value, cost, conflictingKeys, priority, ownerId); 2277} 2278 2279CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor( 2280 const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial) { 2281 return makeClientDescriptor(partial->getKey(), value, partial->getCost(), 2282 partial->getConflicting(), partial->getPriority(), partial->getOwnerId()); 2283} 2284 2285// ---------------------------------------------------------------------------- 2286 2287static const int kDumpLockRetries = 50; 2288static const int kDumpLockSleep = 60000; 2289 2290static bool tryLock(Mutex& mutex) 2291{ 2292 bool locked = false; 2293 for (int i = 0; i < kDumpLockRetries; ++i) { 2294 if (mutex.tryLock() == NO_ERROR) { 2295 locked = true; 2296 break; 2297 } 2298 usleep(kDumpLockSleep); 2299 } 2300 return locked; 2301} 2302 2303status_t CameraService::dump(int fd, const Vector<String16>& args) { 2304 ATRACE_CALL(); 2305 2306 String8 result("Dump of the Camera Service:\n"); 2307 if (checkCallingPermission(String16("android.permission.DUMP")) == false) { 2308 result = result.format("Permission Denial: " 2309 "can't dump CameraService from pid=%d, uid=%d\n", 2310 getCallingPid(), 2311 getCallingUid()); 2312 write(fd, result.string(), result.size()); 2313 } else { 2314 bool locked = tryLock(mServiceLock); 2315 // failed to lock - CameraService is probably deadlocked 2316 if (!locked) { 2317 result.append("CameraService may be deadlocked\n"); 2318 write(fd, result.string(), result.size()); 2319 } 2320 2321 bool hasClient = false; 2322 if (!mModule) { 2323 result = String8::format("No camera module available!\n"); 2324 write(fd, result.string(), result.size()); 2325 2326 // Dump event log for error information 2327 dumpEventLog(fd); 2328 2329 if (locked) mServiceLock.unlock(); 2330 return NO_ERROR; 2331 } 2332 2333 result = String8::format("Camera module HAL API version: 0x%x\n", mModule->getHalApiVersion()); 2334 result.appendFormat("Camera module API version: 0x%x\n", mModule->getModuleApiVersion()); 2335 result.appendFormat("Camera module name: %s\n", mModule->getModuleName()); 2336 result.appendFormat("Camera module author: %s\n", mModule->getModuleAuthor()); 2337 result.appendFormat("Number of camera devices: %d\n", mNumberOfCameras); 2338 result.appendFormat("Number of normal camera devices: %d\n", mNumberOfNormalCameras); 2339 String8 activeClientString = mActiveClientManager.toString(); 2340 result.appendFormat("Active Camera Clients:\n%s", activeClientString.string()); 2341 result.appendFormat("Allowed users:\n%s\n", toString(mAllowedUsers).string()); 2342 2343 sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor(); 2344 if (desc == NULL) { 2345 result.appendFormat("Vendor tags left unimplemented.\n"); 2346 } else { 2347 result.appendFormat("Vendor tag definitions:\n"); 2348 } 2349 2350 write(fd, result.string(), result.size()); 2351 2352 if (desc != NULL) { 2353 desc->dump(fd, /*verbosity*/2, /*indentation*/4); 2354 } 2355 2356 dumpEventLog(fd); 2357 2358 bool stateLocked = tryLock(mCameraStatesLock); 2359 if (!stateLocked) { 2360 result = String8::format("CameraStates in use, may be deadlocked\n"); 2361 write(fd, result.string(), result.size()); 2362 } 2363 2364 for (auto& state : mCameraStates) { 2365 String8 cameraId = state.first; 2366 result = String8::format("Camera %s information:\n", cameraId.string()); 2367 camera_info info; 2368 2369 // TODO: Change getCameraInfo + HAL to use String cameraIds 2370 status_t rc = mModule->getCameraInfo(cameraIdToInt(cameraId), &info); 2371 if (rc != OK) { 2372 result.appendFormat(" Error reading static information!\n"); 2373 write(fd, result.string(), result.size()); 2374 } else { 2375 result.appendFormat(" Facing: %s\n", 2376 info.facing == CAMERA_FACING_BACK ? "BACK" : "FRONT"); 2377 result.appendFormat(" Orientation: %d\n", info.orientation); 2378 int deviceVersion; 2379 if (mModule->getModuleApiVersion() < CAMERA_MODULE_API_VERSION_2_0) { 2380 deviceVersion = CAMERA_DEVICE_API_VERSION_1_0; 2381 } else { 2382 deviceVersion = info.device_version; 2383 } 2384 2385 auto conflicting = state.second->getConflicting(); 2386 result.appendFormat(" Resource Cost: %d\n", state.second->getCost()); 2387 result.appendFormat(" Conflicting Devices:"); 2388 for (auto& id : conflicting) { 2389 result.appendFormat(" %s", id.string()); 2390 } 2391 if (conflicting.size() == 0) { 2392 result.appendFormat(" NONE"); 2393 } 2394 result.appendFormat("\n"); 2395 2396 result.appendFormat(" Device version: %#x\n", deviceVersion); 2397 if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_0) { 2398 result.appendFormat(" Device static metadata:\n"); 2399 write(fd, result.string(), result.size()); 2400 dump_indented_camera_metadata(info.static_camera_characteristics, 2401 fd, /*verbosity*/2, /*indentation*/4); 2402 } else { 2403 write(fd, result.string(), result.size()); 2404 } 2405 2406 CameraParameters p = state.second->getShimParams(); 2407 if (!p.isEmpty()) { 2408 result = String8::format(" Camera1 API shim is using parameters:\n "); 2409 write(fd, result.string(), result.size()); 2410 p.dump(fd, args); 2411 } 2412 } 2413 2414 auto clientDescriptor = mActiveClientManager.get(cameraId); 2415 if (clientDescriptor == nullptr) { 2416 result = String8::format(" Device %s is closed, no client instance\n", 2417 cameraId.string()); 2418 write(fd, result.string(), result.size()); 2419 continue; 2420 } 2421 hasClient = true; 2422 result = String8::format(" Device %s is open. Client instance dump:\n\n", 2423 cameraId.string()); 2424 result.appendFormat("Client priority level: %d\n", clientDescriptor->getPriority()); 2425 result.appendFormat("Client PID: %d\n", clientDescriptor->getOwnerId()); 2426 2427 auto client = clientDescriptor->getValue(); 2428 result.appendFormat("Client package: %s\n", 2429 String8(client->getPackageName()).string()); 2430 write(fd, result.string(), result.size()); 2431 2432 client->dumpClient(fd, args); 2433 } 2434 2435 if (stateLocked) mCameraStatesLock.unlock(); 2436 2437 if (!hasClient) { 2438 result = String8::format("\nNo active camera clients yet.\n"); 2439 write(fd, result.string(), result.size()); 2440 } 2441 2442 if (locked) mServiceLock.unlock(); 2443 2444 // Dump camera traces if there were any 2445 write(fd, "\n", 1); 2446 camera3::CameraTraces::dump(fd, args); 2447 2448 // change logging level 2449 int n = args.size(); 2450 for (int i = 0; i + 1 < n; i++) { 2451 String16 verboseOption("-v"); 2452 if (args[i] == verboseOption) { 2453 String8 levelStr(args[i+1]); 2454 int level = atoi(levelStr.string()); 2455 result = String8::format("\nSetting log level to %d.\n", level); 2456 setLogLevel(level); 2457 write(fd, result.string(), result.size()); 2458 } 2459 } 2460 } 2461 return NO_ERROR; 2462} 2463 2464void CameraService::dumpEventLog(int fd) { 2465 String8 result = String8("\nPrior client events (most recent at top):\n"); 2466 2467 Mutex::Autolock l(mLogLock); 2468 for (const auto& msg : mEventLog) { 2469 result.appendFormat(" %s\n", msg.string()); 2470 } 2471 2472 if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) { 2473 result.append(" ...\n"); 2474 } else if (mEventLog.size() == 0) { 2475 result.append(" [no events yet]\n"); 2476 } 2477 result.append("\n"); 2478 2479 write(fd, result.string(), result.size()); 2480} 2481 2482void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) { 2483 Mutex::Autolock al(mTorchClientMapMutex); 2484 for (size_t i = 0; i < mTorchClientMap.size(); i++) { 2485 if (mTorchClientMap[i] == who) { 2486 // turn off the torch mode that was turned on by dead client 2487 String8 cameraId = mTorchClientMap.keyAt(i); 2488 status_t res = mFlashlight->setTorchMode(cameraId, false); 2489 if (res) { 2490 ALOGE("%s: torch client died but couldn't turn off torch: " 2491 "%s (%d)", __FUNCTION__, strerror(-res), res); 2492 return; 2493 } 2494 mTorchClientMap.removeItemsAt(i); 2495 break; 2496 } 2497 } 2498} 2499 2500/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) { 2501 2502 /** 2503 * While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the 2504 * binder driver 2505 */ 2506 2507 logClientDied(getCallingPid(), String8("Binder died unexpectedly")); 2508 2509 // check torch client 2510 handleTorchClientBinderDied(who); 2511 2512 // check camera device client 2513 if(!evictClientIdByRemote(who)) { 2514 ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__); 2515 return; 2516 } 2517 2518 ALOGE("%s: Java client's binder died, removing it from the list of active clients", 2519 __FUNCTION__); 2520} 2521 2522void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId) { 2523 updateStatus(status, cameraId, {}); 2524} 2525 2526void CameraService::updateStatus(ICameraServiceListener::Status status, const String8& cameraId, 2527 std::initializer_list<ICameraServiceListener::Status> rejectSourceStates) { 2528 // Do not lock mServiceLock here or can get into a deadlock from 2529 // connect() -> disconnect -> updateStatus 2530 2531 auto state = getCameraState(cameraId); 2532 2533 if (state == nullptr) { 2534 ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__, 2535 cameraId.string()); 2536 return; 2537 } 2538 2539 // Update the status for this camera state, then send the onStatusChangedCallbacks to each 2540 // of the listeners with both the mStatusStatus and mStatusListenerLock held 2541 state->updateStatus(status, cameraId, rejectSourceStates, [this] 2542 (const String8& cameraId, ICameraServiceListener::Status status) { 2543 2544 if (status != ICameraServiceListener::STATUS_ENUMERATING) { 2545 // Update torch status if it has a flash unit. 2546 Mutex::Autolock al(mTorchStatusMutex); 2547 ICameraServiceListener::TorchStatus torchStatus; 2548 if (getTorchStatusLocked(cameraId, &torchStatus) != 2549 NAME_NOT_FOUND) { 2550 ICameraServiceListener::TorchStatus newTorchStatus = 2551 status == ICameraServiceListener::STATUS_PRESENT ? 2552 ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF : 2553 ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE; 2554 if (torchStatus != newTorchStatus) { 2555 onTorchStatusChangedLocked(cameraId, newTorchStatus); 2556 } 2557 } 2558 } 2559 2560 Mutex::Autolock lock(mStatusListenerLock); 2561 2562 for (auto& listener : mListenerList) { 2563 // TODO: Refactor status listeners to use strings for Camera IDs and remove this. 2564 int id = cameraIdToInt(cameraId); 2565 if (id != -1) listener->onStatusChanged(status, id); 2566 } 2567 }); 2568} 2569 2570void CameraService::updateProxyDeviceState(ICameraServiceProxy::CameraState newState, 2571 const String8& cameraId) { 2572 sp<ICameraServiceProxy> proxyBinder = getCameraServiceProxy(); 2573 if (proxyBinder == nullptr) return; 2574 String16 id(cameraId); 2575 proxyBinder->notifyCameraState(id, newState); 2576} 2577 2578status_t CameraService::getTorchStatusLocked( 2579 const String8& cameraId, 2580 ICameraServiceListener::TorchStatus *status) const { 2581 if (!status) { 2582 return BAD_VALUE; 2583 } 2584 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2585 if (index == NAME_NOT_FOUND) { 2586 // invalid camera ID or the camera doesn't have a flash unit 2587 return NAME_NOT_FOUND; 2588 } 2589 2590 *status = mTorchStatusMap.valueAt(index); 2591 return OK; 2592} 2593 2594status_t CameraService::setTorchStatusLocked(const String8& cameraId, 2595 ICameraServiceListener::TorchStatus status) { 2596 ssize_t index = mTorchStatusMap.indexOfKey(cameraId); 2597 if (index == NAME_NOT_FOUND) { 2598 return BAD_VALUE; 2599 } 2600 ICameraServiceListener::TorchStatus& item = 2601 mTorchStatusMap.editValueAt(index); 2602 item = status; 2603 2604 return OK; 2605} 2606 2607}; // namespace android 2608